Gasoline engine



FIG. 1 is a perspective view of the engine design.

FIG. 2 is a left side view of the engine.

FIG. 3 is a right side view of the engine.

FIG. 4 is a front view of the engine.

FIG. 5 is a rear view of the engine.

FIG. 6 is a top view of the engine; and,

FIG. 7 is a bottom view of the engine.

The broken lines shown in FIG. 7 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a gasoline engine, as shown and described. 